a person has a resting blood flow of 7.3 L min-1. The volume of the left ventricle is 152 mL and the ejection rate is 76 %. Calculate the heart rate required. Give your answer in beats per min (BPM), rounded to zero decimal places
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a person has a resting blood flow of 7.3 L min-1. The volume of the left ventricle is 152 mL and the ejection rate is 76 %. Calculate the heart rate required. Give your answer in beats per min (BPM), rounded to zero decimal places
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- A person has a resting blood flow of 8.1 L min-1. The hydraulic power of the left ventricle is 2.21 Watts. Calculated the blood pressure required to maintain the flow rate. Give your answer in mmHg (i.e. as in standard blood pressure measurements). Round your answer to zero decimal places0.2 0.4 0.6 0.8 In the ECG above, which portion of the graph corresponds to the electrical activity of the heart when the ventricles are contracting? QRS R PQRA patient has a heart rate of 60 beats/min, an end diastolic volume of 150mL, and an end systolic volume of 60mL. What is this patient's cardiac output? O 12.6 L/min O 5.4 L/min 6.3 L/min O 90mL/min
- Table 1 Blood pressure recordings for all positions Body positions Mean systolic BP Mean diastolic BP Sitting position Standing position Supine position Supine position with crossed legs 102-8 + 11-4 65-7 + 82 99.9 + 10-2 66-0 + 8-7 107-9 + 10-7 66-9 + 96 107-0 + 86 66-7 + 7-3 F= 444, P 00s BP, blood pressure. Table 2 Pairwise comparisons between positions in systolic BP Sitting position position Standing Supine position Standing position Supine position Supine position with crossed legs *, the mean difference is significant at the level 0-05 level. Adjustment for multiple comparisons: Bonferroni. Does age factor has any influences in the blood pressure with the change of body positions?200 Curve 1 175 Curve 2 150 125 Curve 3 100 75 50 25 50 100 150 200 250 300 350 400 LV End Diastolic Volume (mL) Use the information in this paragraph and the image above to answer the question below. This figure shows the relationship between EDV and SV. Curve 2 is representatíve of a normal individual sitting on a bike, resting. There are two other curves illustrated and there are multiple points landmarked with a "o" and the letters "A to F". You can assume that the only changes in relevant variables are described in each question. If a variable is not mentioned you can assume that it has not changed. The starting point is "A". Select an appropriate pointif there was an increase in cardiac inotropy. 23 D. Stroke Volume (mL)Resting heart rate that is provided is 78
- Caleb is 14 years old. An appropriate method of prescribing intensity for Caleb, based upon the ACSM recommendations of moderate to vigorous intensity exercise, is 65-95% of heart rate max.Amanda's end diastolic volume is 120ml and her end systolic volume is 40ml. If her heart rate is 60 beats per minute, what is her cardiac output?" A 5.25 L/min B 4800 ml/min C 2200 ml/min D 2.2 L/beat E 4800 L/beatResting blood pressure (sitting) Resting blood pressure (lying down) Systolc 120 100 = ________ = ________ Diastolic 80 70 12. The normal blood pressure for an adult is less than 120/80. How does the resting systolic/diastolic pressure of your volunteer compare to the normal value?
- Relationship between pressure, volume and ECG Pressure (mmHg) Volume (mL) ECG 120 40 0- 130 90 + + 50+ IVC Aortic valve opens Mitral valve closes Systole ejection EDV Ejection Contraction IVR Aortic valve closes Diastole filling Mitral valve opens Filling --ESV Relaxation Filling Aortic pressure Left ventricular pressure Left atrial pressure Left ventricular volume What happens during the filling phase of the cardiac cycle? What is the outflow phase of the cardiac cycle and how long does it last? What happens during the iso-volumetric contraction phase of the cardiac cycle?1. Sue has a resting stroke volume of 72 ml/beat and an average resting heart rate of 70 beats/minute. What is her cardiac output (CO). Remember to include correct units in your answer. 2.Sue goes to the gym and after an initial warm-up, she increases her exercise level pushing herself to maximum. At this point her heart rate is 175 beats/min and her stroke volume is 135 ml/beat. What is her cardiac output now? 3 At this point, by how many ml/min has her CO increased over her resting CO? 4. What % increase over resting is this? (Use the following equation). amount of increase in CO in ml/min % increase = _______________________X 100% original CO (resting) ml/min 5. What term is used to describe this increase in CO?Finger pulse start of pulse upswing to peak (s) Total time (upswinging to baseline, s) 0.090 0.240 ECG and Finger pulse R to start of pulse upswing (s) T to peak of pulse (s) 0.010 0.090 1. Would the relationship be the same if you had recorded the carotid pulse? Justify your answer. 3. What do you conclude about the cardiac cycle from your measurements?
